Input and output devices allow users to enter and retrieve data from a computer. Input devices include keyboards, mice, scanners, microphones, and webcams which allow users to input information into a computer. Output devices such as monitors, printers, speakers and projectors are used to provide output from the computer in either soft copy or hard copy format. Common input devices are keyboards for entering text, mice for pointing and selection, and microphones for audio input. Common output devices are monitors for visual display, printers for hard copies, and speakers and projectors for audio and visual output.

1. Input And Output
Device
COLLEGE OF INNOVATIVE MANAGEMENT & SCIENCE
LUCKY VERMA
BCA(SEMESTER 1ST)

2. What is Device ?
 It can be defined as the components or peripherals which are attached to
the computer to enter the data and get the desired result.
 Examples:- Monitor, Keyboard , Mouse ,Printer , etc.
TYPES OF DEVICES
INPUT DEVICES
OUTPUT DEVICES

3. INPUT DEVICES.
It is an Electromechanical Device that can be used to enter data and
instructions to the computer
Input device
Pointing
device
Keyboard
Optical
input
device
Audio
input
device
Video
input
device

4. Pointing Devices
A pointing device, or sometimes called a pointing tool, is a hardware input
device that allows the user to move the mouse cursor in a computer program
or operating system.
Types of Pointing Devices:-
 Mouse Joystick Touchpad. Light Pen.

5. MOUSE
Mouse Was Invented In during 1960’s. By Douglas Engalebart.
Mouse can be used to control and manipulate cursor movement on monitor
Types Of Mouse
 Mechanical Mouse
 Optical Mouse
 Wireless Mouse

6. KEYBOARD
Keyboard Was Invented By Christopher Latham Sholes.
A Keyboard is a human interface device which is represented as layout of
button or keys.
Features of keyboard:-
1. Typewriter Keyboard with Numeric Keypad.
2. Special Purpose Keys.
3.Toggle And Combination Keys.

7. Optical Devices
 Optical input devices that uses light as a source of input.
They eliminate the need for manual entry of data, thus
accuracy increases.
 Types of Optical Input Devices:
 1. Scanner
 2. Barcode Reader

8. Audio Input Devices
 Audio input devices records the analog sound and convert it into
digital form for further processing.
 Types Of Audio Input Devices.
 1. Voice Recognition
 2. Microphone
 3. Music Instrument
Video Input Devices
 Video Input Devices are used to entering full motion video recording into a
computer.

9. OUTPUT DEVICES
 Output Devices are used to receive information from the computer either in
Softcopy or Hard Copy.
Output device
Monitor Printer
Audio
output projector

10. MONITOR
Monitor was invented in 1897 By Karl Ferdinand Braun.
 A computer monitor or a computer display is an electronic visual display for
computers.
A computer monitor is an electronic device that shows pictures for computers.
Monitors often look similar to televisions.
There are three types of monitor:
1. C.R.T Monitor
2. L.C.D Monitor
3. L.E.D Monitor

11. PRINTER
Printer was invented by Johannes Gutenberg
 In computing, a printer is a peripheral which makes a persistent human- readable
representation of graphics or text on paper or similar physical media
Types Of Printer:-
1. Impact Printer :- An impact printer makes contact with the paper. It usually forms the print
image bypressing an inked ribbon against the paper using a hammer or pins.
 Eg. Dot-Matrix , Daisy Wheel, Etc. gff
 2. Non-Impact Printer :- Non-impact printers do not use a striking device to produce characters
on the paper; and because these printers do not hammer against the paper they are much quieter.
 Eg. Inkjet , Laser, Etc.

12. AUDIO OUTPUT DEVICE
The term “Audio Output Device" refers to any device that attaches to a
computer for the purpose of playing sound, such as music or speech. The
term can also refer to a computer sound card.
 Types Of Audio Output Device:-
 1. Speakers
 2. HeadPhones
 3. Sound Card

13. PROJECTOR
Projector was invented by Charles Francis Jenkins.
A projector or image projector is an optical device that projects
an image (or moving images) onto a surface, commonly a projection
screen.

14. THANK YOU !